First-person possessive pronouns are used to represent something that belongs to you. They are mine (singular) and ours (plural). They are closely related to the first-person possessive determiners my (singular) and our (plural).
For those unaware, Call of Duty: Warzone Mobile is available as a part of a limited release in certain regions, which include countries like Australia, Chile, Norway, and more. The limited-release variant is said to be a work-in-progress version of the much-awaited title, which is still seemingly under development.